Measurement of Mass, Length, and Time

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School

Louisiana State University *

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2108

Subject

Mechanical Engineering

Date

Dec 6, 2023

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docx

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4

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Name: Date: 9/7/2023 Partners: PHYS 2108 Section: 13 Lab Title: Measurement of Mass, Length, and Time Lab Report 2 Prelab (2 points) Purpose Taking the measurement of multiple items (mass, length, and time). Each measurement has a specific unit along with the measurement. All the fundamental units must be in metric system (MKS). Which leads to learning unit conversions for any measurement. Procedure Measure the length and width of the tabletop. The length and width of the table will be calculated for the area. The mass of a plastic object was found by a triple beam balance. A digital caliper found the dimensions of the plastic object and the diameter and length of a white metal cylinder. The mean and standard deviation was found with each item measured. Each measurement has their corresponding unit (in metric units). During Lab (Findings) Analysis (15 points) Please attach all data tables and calculations after this page. Area of Table: 1.6720 m 2 Area: (1.2184m) (1.3730m) = 1.6720 m 2 Using Short Meterstick Using Long Meterstick Length (m) Width (m) Length (m) Wifth (m) A1 1.2115 1.3701 1.2170 1.3740 2 1.2242 1.3989 1.2190 1.3730 3 1.2235 1.3757 1.2190 1.3700 4 1.2289 1.3732 1.2180 1.3730 5 1.2272 1.3752 1.2190 1.3730 1.1549E-02 1.5166E-03 Plastic Object Length (m) Width (m) Thickness (m) Mass (kg) 1 0.05033 0.05074 0.02406 7.349E-02 2 0.05035 0.05089 0.02406 7.335E-02 3 0.05032 0.05085 0.02403 7.339E-02 4 0.05027 0.05086 0.02407 7.410E-02 5 0.05033 0.05087 0.02406 7.352E-02 Mean 0.05032 0.05084 0.02405 0.07357 StD 3.000E-05 5.891E-05 1.516E-05 3.044E-04
Volume: 6.155E-05 m 3 V= L*W*H = (0.05032)(0.05084)(0.02405) Weight: 7.210E-01 W = mg = (0.07357)(9.8) Weight density: 11710 WD = m/v = 0.07357/6.155E-05 Cylinders White Metal Golden Metal Diameter (m) 1.580E-02 1.574E-02 Length (m) 7.115E-02 5.019E-02 Mass (kg) 3.812E-02 8.309E-02 Volume (m 3 ) 1.395E-05 9.766E-06 Weight (N) 3.736E-01 8.143E-01 Weight Density (N/m 3 ) 26780 83380 Volume = (0.01580) 2 (0.07115)(pi/4) Reflection (9 points) 1. The measurement used to find the area of the tabletop was the values from the 2- meter meterstick. I chose those values because the standard deviation of those values was lower than the 1-meter meterstick values. The lowest standard deviation shows a smaller range of data giving a more accurate measurement. A larger standard deviation would have a larger range of data therefore, the measurements are less accurate. 2. As more measurements are taken, the precision will improve. Each measurement taken will likely not be the same as the previous measurement. Accuracy will be lost because each measurement will be similar in value as the accurate value could be
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